What is populism and what role does it play within the context of democratic politics? Does it cut across left-right lines? What is its relationship with nationalism? Daphne Halikiopoulou, Bart Bonikowski (Harvard), Matthijs Rooduijn (Amsterdam) and Eric Kaufmann (Birkbeck) agree and disagree while answering these questions in the new Nations&Nationalism ‘Exchange’ feature, just published and available on early view: https://onlinelibrary.wiley.com/doi/10.1111/nana.12480?fbclid=IwAR0vmidycURWpe18rnYD0oi8jxjX_oszdL4rKPviEMSYR32D3LwRBDILoPg